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XML Formatter & Validator
Format, validate and pretty-print XML in your browser — no data leaves your machine.
What is an XML formatter?
Paste minified or messy XML and get a readable, indented version back — or find out exactly why it's invalid. Parsing happens entirely in your browser: nothing you paste here is sent anywhere.
Common uses
- Debugging an XML API response or SOAP payload
- Cleaning up a minified XML config or feed file
- Validating XML before committing it to a config file
- Sanity-checking XML you’re about to paste into code
FAQ
Does this validate against an XSD or schema?
No — it only checks that the XML is well-formed, not that it matches a particular schema.
Does it handle XML namespaces?
Namespace-prefixed tags round-trip correctly, but no namespace-aware validation is performed.
Is there a size limit?
No hard limit, but very large payloads (several MB) may be slow since parsing runs on the main thread.